You can read the two justifications here yourself. While I have a generally negative opinion towards some weird effort to remove “Edgy Roleplay”, the argument that it doesn’t meaningfully contribute to the game to make it a straight reward with no downsides for something the player is always and constantly doing holds up. It also has the side problem of forcing anyone who does want a character who gets this reward to have their character utter edgy lines that might otherwise conflict.
As a player, sure, but CDDA characters aren’t enjoying this experience from behind a keyboard like us. Normal Humans are not going to feel happiness when they’re forced to fight for their life against inhuman monsters to avoid starving to death. Its a pop culture perception of bloodthirst to think otherwise.
Fundamentally, trying to fix it as some representation of bloodthirsty behavior would need to be reworked into a full mechanic with more depth and representation of that archetype than just kill and be happy, which nobody has seemingly had the interest in implementing, while also not putting a bad taste in peoples mouth for adding ‘weird shit’ to the game.